Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet

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	Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet
	Cheng, Chao 1,2; Chen, Zhiyong 1,2; Li, Hong En 3; Wang, Xin 4; Zhu, Shaoxiang 1,2; Wang, Qingjiang 1,2
Corresponding Author	Chen, Zhiyong(zhiyongchen@imr.ac.cn)
	2021-01-07
Source Publication	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
Volume	800 Pages:14
Abstract	The superplastic deformation and microstructure characterization of a near alpha titanium alloy TA32 sheet with a nominal composition of Ti-5.5Al-3.5Sn-3Zr-1Mo-0.5Nb-0.7Ta-0.3Si in vacuum environment were systematically investigated. The maximum superplastic elongation was obtained to be 702% at 940 ?C with a strain rate of 3.33 x 10-3 s-1. The superplastic deformation constitutive equation was established and the average apparent activation energy (Q) and strain rate sensitivity (m) were calculated to be 316.3 kJ/mol and 0.46, respectively. The spheroidizing process of alpha lath was accelerated by dynamic globularization (DG). Active dislocation motion was observed and developed an attractive interaction with Silicides ((TiZr)6Si3). Transformation of low angle grain boundaries (LAGBs,2? < 15?) to high angle boundaries (HAGBs, theta 15?) was promoted by dynamic recrystallization (DRX). Significant change in texture intensity of B-type and R-type texture was observed after superplastic deformation, which was attributed to grain rotation. Superplastic deformation of TA32 sheet was mainly controlled by grain boundary sliding (GBS) along with kinds of accommodation processes, including DG, DRX, dislocation motion, grain rotation and grain growth. Superscript/Subscript Available
Keyword	TA32 sheet Vacuum superplastic deformation Constitutive equation Microstructure and texture Deformation behavior
Indexed By	SCI
Language	英语
WOS Research Area	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS Subject	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS ID	WOS:000593914500001
Publisher	ELSEVIER SCIENCE SA
Citation statistics	Cited Times:9[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/141485
Collection	中国科学院金属研究所
Corresponding Author	Chen, Zhiyong
Affiliation	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Shenyang Aircraft Design & Res Inst, Shenyang 110035, Peoples R China 4.Baoji Titanium Ind Co Ltd, Baoji 721000, Peoples R China
Recommended Citation GB/T 7714	Cheng, Chao,Chen, Zhiyong,Li, Hong En,et al. Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,800:14.
APA	Cheng, Chao,Chen, Zhiyong,Li, Hong En,Wang, Xin,Zhu, Shaoxiang,&Wang, Qingjiang.(2021).Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,800,14.
MLA	Cheng, Chao,et al."Vacuum superplastic deformation behavior of a near- alpha titanium alloy TA32 sheet".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 800(2021):14.

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